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Finding the Fourth Proportional to 358,999.32, 538,598.76 and 156,613.12

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Solution

The fourth proportional to 358,999.32, 538,598.76 and 156,613.12 is: 234,963.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,999.32 : 538,598.76 = 156,613.12 : x
  2. Step 2: Convert to fraction form
    358,999.32/538,598.76 = 156,613.12/x
  3. Step 3: Cross multiply
    358,999.32x = 538,598.76 × 156,613.12
  4. Step 4: Simplify right side
    358,999.32x = 84,351,632,231.73
  5. Step 5: Solve for x
    x = 84,351,632,231.73/358,999.32
  6. Step 6: Final answer
    x = 234,963.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.